Safety Pressure Limiter

The electronic safety pressure limiter DB 1000/2 is the combination of a pressure limiter (PZH) and an safety pressure limiter (PZHH) together in a common case and work independently of each other. The application is to prevent a transgression of the maximum operating pressure in refrigeration plants and air-conditioning systems in accordance with BGR 500, chapter 2.35 (operator) and EN 378 (manufacturer).

Pressure limiter (PZH) and safety pressure limiter (PZHH) supervise the respectively oriented pressure threshold. At transgression the respective output relay is switched inactively and a signal LED flashes. The reset of the PZH is carried out by means of a button at the case. The PZHH can be resetted only after removal of the lid by means of a button. Features Safety pressure limiter in accordance with EN 378 with self-test functions internal errors cause the immediate switching off of the outputs and being shown by a LED-flash code USB socket for the connection with PC or notebook computer Parameter setting, reading of the appeared pressure maximum and other functions are possible with the help of an enclosed PC program independent analogous pressure output of 4...20 mA (4 mA at 0 bar, 20 mA at nominal pressure)